Require CMake 3.0

All policies up to CMP0050 have been verified compatible (after far more tweaking than I'd have liked)

Author: AnyOldName3

CMakeLists.txt

@@ -13,7 +13,7 @@ SET(OPENSCENEGRAPH_RELEASE_CANDIDATE 0)
 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8.0 FATAL_ERROR)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.0 FATAL_ERROR)
 
 if(COMMAND cmake_policy)
     # INTERPROCEDURAL_OPTIMIZATION is enforced when enabled.
@@ -888,22 +888,8 @@ IF(DEFINED LIB_POSTFIX)
   # Use LIB_POSTFIX if defined
   SET(OSG_INSTALL_LIBDIR lib${LIB_POSTFIX})
 ELSE()
-  IF(CMAKE_VERSION VERSION_LESS "2.8.5")
-    IF(UNIX AND NOT WIN32 AND NOT APPLE)
-      IF(CMAKE_SIZEOF_VOID_P MATCHES "8")
-        SET(LIB_POSTFIX "64" CACHE STRING "suffix for 32/64 dir placement")
-        MARK_AS_ADVANCED(LIB_POSTFIX)
-      ENDIF()
-    ENDIF()
-    IF(NOT DEFINED LIB_POSTFIX)
-      SET(LIB_POSTFIX "")
-    ENDIF()
-    SET(OSG_INSTALL_LIBDIR lib${LIB_POSTFIX})
-  ELSE()
-    # Use the GNU standard installation directories for CMake >= 2.8.5
-    INCLUDE(GNUInstallDirs)
-    SET(OSG_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR})
-  ENDIF()
+  INCLUDE(GNUInstallDirs)
+  SET(OSG_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR})
 ENDIF()
 IF(NOT DEFINED LIB_POSTFIX)
     SET(LIB_POSTFIX "")

PlatformSpecifics/Android/android.toolchain.cmake

@@ -210,7 +210,7 @@
 
 # Modified by Lasse Oorni and Yao Wei Tjong for Urho3D
 
-cmake_minimum_required( VERSION 2.6.3 )
+cmake_minimum_required( VERSION 3.0 )
 
 # Urho3D: on Windows Cygwin-based NDK tools may fail in the linking phase with too long command line. Turn on response files to avoid this
 if( CMAKE_HOST_WIN32 )
@@ -854,20 +854,16 @@ else()
   unset( __realApiLevel )
  endif()
  set( ANDROID_NATIVE_API_LEVEL "${ANDROID_NATIVE_API_LEVEL}" CACHE STRING "Android API level for native code" FORCE )
- if( CMAKE_VERSION VERSION_GREATER "2.8" )
-  list( SORT ANDROID_SUPPORTED_NATIVE_API_LEVELS )
-  set_property( CACHE ANDROID_NATIVE_API_LEVEL PROPERTY STRINGS ${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
- endif()
+ list( SORT ANDROID_SUPPORTED_NATIVE_API_LEVELS )
+ set_property( CACHE ANDROID_NATIVE_API_LEVEL PROPERTY STRINGS ${ANDROID_SUPPORTED_NATIVE_API_LEVELS} )
 endif()
 unset( __levelIdx )
 
 
 # remember target ABI
 set( ANDROID_ABI "${ANDROID_ABI}" CACHE STRING "The target ABI for Android. If arm, then armeabi-v7a is recommended for hardware floating point." FORCE )
-if( CMAKE_VERSION VERSION_GREATER "2.8" )
- list( SORT ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME} )
- set_property( CACHE ANDROID_ABI PROPERTY STRINGS ${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME}} )
-endif()
+list( SORT ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME} )
+set_property( CACHE ANDROID_ABI PROPERTY STRINGS ${ANDROID_SUPPORTED_ABIS_${ANDROID_ARCH_NAME}} )
 
 
 # runtime choice (STL, rtti, exceptions)
@@ -1162,9 +1158,7 @@ if( NOT CMAKE_C_COMPILER )
 endif()
 
 set( _CMAKE_TOOLCHAIN_PREFIX "${ANDROID_TOOLCHAIN_MACHINE_NAME}-" )
-if( CMAKE_VERSION VERSION_LESS 2.8.5 )
- set( CMAKE_ASM_COMPILER_ARG1 "-c" )
-endif()
+set( CMAKE_ASM_COMPILER_ARG1 "-c" )
 if( APPLE )
  find_program( CMAKE_INSTALL_NAME_TOOL NAMES install_name_tool )
  if( NOT CMAKE_INSTALL_NAME_TOOL )

examples/osgCMakeExample/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.0)
 
 SET(PROJECT_NAME osgCMakeExample)
 

examples/osgemscripten/CMakeLists.txt

@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8.0 FATAL_ERROR)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.0 FATAL_ERROR)
 
 # Path to OpenSceneGraph
 SET(OSG_DIR "${CMAKE_SOURCE_DIR}/../..")